

A187663


a(0) = 1, a(n) = least primorial sharing at least n distinct digits with a(n1).


0



1, 210, 2310, 223092870, 6469693230, 200560490130, 304250263527210, 614889782588491410, 32589158477190044730, 1922760350154212639070, 117288381359406970983270
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OFFSET

0,2


COMMENTS

The sequence ends with the smallest pandigital primorial, which is 61# = 117288381359406970983270 (18th primorial).
If you change the criterion from "at least n distinct" to "all" the sequence becomes 1, 210, 2310, 200560490130, 1922760350154212639070, 117288381359406970983270.


LINKS

Table of n, a(n) for n=0..10.


EXAMPLE

a(1) = 210 = 7#, which shares the "1" with a(0).
a(2) = 2310 = 11#, which shares more than the needed two digits with 210, namely "0", "1", and "2".
a(3) = 223092870 = 23#.


CROSSREFS

Cf. A002110.
Sequence in context: A187309 A104902 A135201 * A064260 A027806 A024407
Adjacent sequences: A187660 A187661 A187662 * A187664 A187665 A187666


KEYWORD

nonn,base,easy,fini,full


AUTHOR

Jonathan Vos Post, Mar 12 2011


STATUS

approved



